我目前在我的MatchCenterViewController
中有一個UITableView
,我設計它爲每個部分加載10行,但只通過使heightForRowAtIndexPath
爲其餘的值返回0來顯示前4個。我想要做的是在按下每個部分的底部都有一個按鈕,它將重新加載數據,併爲該特定部分顯示10而不是4。如何在每個UITableView部分的底部插入一個按鈕?
我已經開始研究按鈕被按下時會發生什麼的框架,我只是在渲染底部按鈕的語法時遇到了問題,並且僅顯示了相應部分的10行。以下是我有我UITableView
奠定了至今:
MatchCenterViewController.h:
#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#import "AsyncImageView.h"
#import "SearchViewController.h"
#import "WebViewController.h"
#import "SLExpandableTableView.h"
@interface MatchCenterViewController : UIViewController <UITableViewDataSource>
@property (strong, nonatomic) NSString *itemSearch;
@property (nonatomic, strong) NSArray *imageURLs;
@property (strong, nonatomic) NSString *matchingCategoryCondition;
@property (strong, nonatomic) NSString *matchingCategoryLocation;
@property (strong, nonatomic) NSNumber *matchingCategoryMaxPrice;
@property (strong, nonatomic) NSNumber *matchingCategoryMinPrice;
@property (strong, nonatomic) NSArray *matchCenterArray;
@property (strong, nonatomic) NSString *searchTerm;
@property (strong, nonatomic) NSString *itemURL;
@end
MatchCenterViewController.m:
#import "MatchCenterViewController.h"
#import <UIKit/UIKit.h>
@interface MatchCenterViewController() <UITableViewDataSource, UITableViewDelegate>
@property (nonatomic, strong) UITableView *matchCenter;
@property (nonatomic, assign) BOOL matchCenterDone;
@property (nonatomic, assign) BOOL hasPressedShowMoreButton;
@end
@implementation MatchCenterViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
_matchCenterDone = NO;
//self.matchCenter = [[SLExpandableTableView alloc] initWithFrame:self.view.bounds style:UITableViewCellStyleSubtitle];
self.matchCenter = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewCellStyleSubtitle];
self.matchCenter.frame = CGRectMake(0,50,320,self.view.frame.size.height-100);
_matchCenter.dataSource = self;
_matchCenter.delegate = self;
[self.view addSubview:self.matchCenter];
_matchCenterArray = [[NSArray alloc] init];
}
- (void)viewDidAppear:(BOOL)animated
{
self.matchCenterArray = [[NSArray alloc] init];
UIActivityIndicatorView *activityIndicator = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
activityIndicator.center = CGPointMake(self.view.frame.size.width/2.0, self.view.frame.size.height/2.0);
[self.view addSubview: activityIndicator];
[activityIndicator startAnimating];
_matchCenterDone = NO;
// Disable ability to scroll until table is MatchCenter table is done loading
self.matchCenter.scrollEnabled = NO;
[PFCloud callFunctionInBackground:@"MatchCenter2"
withParameters:@{}
block:^(NSArray *result, NSError *error) {
if (!error) {
_matchCenterArray = result;
[activityIndicator stopAnimating];
[_matchCenter reloadData];
_matchCenterDone = YES;
self.matchCenter.scrollEnabled = YES;
NSLog(@"Result: '%@'", result);
}
}];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return _matchCenterArray.count;
}
//the part where i setup sections and the deleting of said sections
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 21.0f;
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
return 0.01f;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 21)];
headerView.backgroundColor = [UIColor lightGrayColor];
_searchTerm = [[[[_matchCenterArray objectAtIndex:section] objectForKey:@"Top 3"] objectAtIndex:0]objectForKey:@"Search Term"];
UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(8, 0, 250, 21)];
headerLabel.text = [NSString stringWithFormat:@"%@", _searchTerm];
headerLabel.font = [UIFont boldSystemFontOfSize:[UIFont systemFontSize]];
headerLabel.textColor = [UIColor whiteColor];
headerLabel.backgroundColor = [UIColor lightGrayColor];
[headerView addSubview:headerLabel];
UIButton *deleteButton = [UIButton buttonWithType:UIButtonTypeCustom];
deleteButton.tag = section;
deleteButton.frame = CGRectMake(300, 2, 17, 17);
[deleteButton setImage:[UIImage imageNamed:@"xbutton.png"] forState:UIControlStateNormal];
[deleteButton addTarget:self action:@selector(deleteButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
[headerView addSubview:deleteButton];
return headerView;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSDictionary *currentSectionDictionary = _matchCenterArray[section];
NSArray *top3ArrayForSection = currentSectionDictionary[@"Top 3"];
return top3ArrayForSection.count-1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Initialize cell
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell) {
// if no cell could be dequeued create a new one
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
// No cell separators = clean design
tableView.separatorColor = [UIColor clearColor];
// title of the item
cell.textLabel.text = _matchCenterArray[indexPath.section][@"Top 3"][indexPath.row+1][@"Title"];
cell.textLabel.font = [UIFont boldSystemFontOfSize:14];
// price of the item
cell.detailTextLabel.text = [NSString stringWithFormat:@"$%@", _matchCenterArray[indexPath.section][@"Top 3"][indexPath.row+1][@"Price"]];
cell.detailTextLabel.textColor = [UIColor colorWithRed:0/255.0f green:127/255.0f blue:31/255.0f alpha:1.0f];
// image of the item
NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:_matchCenterArray[indexPath.section][@"Top 3"][indexPath.row+1][@"Image URL"]]];
[[cell imageView] setImage:[UIImage imageWithData:imageData]];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row > 3 || self.hasPressedShowMoreButton){
return 0;
}
else{
return 65;
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (_matchCenterDone == YES) {
self.itemURL = _matchCenterArray[indexPath.section][@"Top 3"][indexPath.row][@"Item URL"];
[self performSegueWithIdentifier:@"WebViewSegue" sender:self];
}
}
-(IBAction)pressedShowMoreButton{
self.hasPressedShowMoreButton = YES;
[self.matchCenter reloadData];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
WebViewController *controller = (WebViewController *) segue.destinationViewController;
controller.itemURL = self.itemURL;
}
@end
如果我我沒有錯,這是爲了爲整個桌子創建一個頁腳,而不是爲每個部分設置一個單獨的頁腳,不是嗎?我希望每個部分在底部都有自己的按鈕。 – Ghobs 2014-10-07 03:16:48